Phosphate anions are one of the most important constituents of living systems. Together with
heterocyclic bases and sugars, phosphates make up DNA, the hereditary element of living …

This review covers recent advances in the use of the squaramide moiety in chemical
research. We focus on the varied applications of squaramides under the broad headings of …

In this minireview, squaramides are presented from their roots as artificial anion receptors in
molecular recognition studies to their recent advances as powerful bifunctional hydrogen …

The interaction of a neutral squaramide‐based receptor, equipped with two 4‐nitrophenyl
substituents (Rsq), with halides and oxoanions has been studied in MeCN. UV/Vis and 1H …

Zinc trifluoromethanesulfonate promotes efficient condensations of anilines with squarate
esters, providing access to symmetrical and unsymmetrical squaramides in high yields from …

This tutorial review examines the potential of anions, in particular sulfate, to template the
formation of complex molecular architectures. Until recently, sulfate has been largely …

Over the last 15 years, squaramide-based receptors have attracted the attention of
supramolecular chemists working in the field of anion recognition. Herein, we highlight …

Distance brings forth beauty: The first highly enantioselective organocatalytic Michael
addition of 4‐hydroxycoumarins and the analogous 4‐hydroxy‐6‐methyl‐2‐pyrone to β, γ …

Anion binding selectivity can often be controlled by judicious arrangement of recognition
moieties around an anion of interest. Indeed, nature takes advantage of large …

Alizarin–phenylboronic acid interactions were used in a new design strategy for self-
organized fluorescent sensors of metal ions and anions. First, Alizarin Red S (ARS), which …